The Kia GA6D is a 1,591 cc, inline‑four naturally aspirated petrol engine produced between 2010 and 2016. It features dual overhead camshafts (DOHC), 16 valves, and Kia's Dual CVVT system for optimizing intake and exhaust valve timing. This technology enhances fuel efficiency and provides a broad, usable torque curve for responsive urban and highway driving.
Fitted primarily to the third-generation Kia Rio (UB) and second-generation Kia Venga, the GA6D was engineered as an economical and reliable global powertrain. It delivers a smooth and quiet driving character, prioritizing low running costs and everyday usability. Emissions compliance was achieved through precise fuel injection and exhaust aftertreatment, meeting Euro 5 standards from launch.
One documented engineering update addressed potential oil consumption under specific high-RPM, high-load conditions, detailed in Kia Technical Service Bulletin TSB-12-GA-005. This was resolved through the introduction of revised piston ring tension specifications in engines produced after Q4 2012 to ensure optimal sealing and long-term durability.
All production years (2010–2016) meet Euro 5 emissions standards for applicable markets (VCA UK Type Approval #VCA/KIA/GA6D/01).
The Kia GA6D is a 1,591 cc inline‑four naturally aspirated petrol engine engineered for subcompact vehicles (2010-2016). It combines Dual CVVT variable valve timing with multi-point fuel injection to deliver smooth, linear power and strong fuel economy. Designed to meet Euro 5 standards, it balances responsive performance with low running costs.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,591 cc | |
| Fuel type | Petrol (Gasoline) | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally Aspirated | |
| Bore × stroke | 77.0 mm × 85.4 mm | |
| Power output | 82 kW (112 PS) @ 6,300 rpm | |
| Torque | 144 Nm @ 4,200 rpm | |
| Fuel system | Multi-point fuel injection (MPFI) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | API SN/ILSAC GF-5, SAE 5W-30 | |
| Dry weight | 96 kg |
The naturally aspirated design offers predictable, linear power delivery ideal for city commuting but lacks the low-end torque of turbocharged rivals. Adherence to 15,000 km or annual oil changes with the specified 5W-30 oil is critical for maintaining timing chain and valve train longevity. The engine requires unleaded petrol with a minimum 95 RON octane rating. The Dual CVVT system is generally robust but relies on clean oil; sludge buildup can impede solenoid operation. Engines built before Q4 2012 should have piston rings inspected if oil consumption is noted, per TSB-12-GA-005.
Oil Specs: Requires API SN/ILSAC GF-5, SAE 5W-30 specification (Kia Owner's Manual UB Rio). ACEA A5/B5 is also acceptable.
Emissions: Euro 5 certification applies to all model years (2010-2016) for UK/EU markets (VCA Type Approval #VCA/KIA/GA6D/01).
Power Ratings: Measured under SAE J1349 standards. Output is consistent across model years (Kia TIS Doc. KTIS-GA6D-001).
Kia Technical Information System (TIS): Docs KTIS-GA6D-001, TSB-12-GA-005
VCA Type Approval Database (VCA/KIA/GA6D/01)
SAE International: J1349 Engine Power Certification Standards
The Kia GA6D was used across Kia's UB/PB platforms with transverse mounting. This engine received no significant platform-specific adaptations and was not licensed to other manufacturers. All applications are documented in OEM technical bulletins.
Locate the engine code stamped on a flat machined surface on the front of the cylinder block, near the exhaust manifold (Kia TIS KTIS-GA6D-001). The 8th digit of the VIN for Rio UB and Venga PB models with this engine is 'F'. Visually, it can be identified by its black plastic intake manifold and "GA6D" casting mark on the block. Differentiation from the Gamma 1.4L (G4FA) is clear by displacement and intake manifold design. No significant service parts compatibility issues exist across the 2010-2016 production run, though piston rings from Q4 2012 onwards are the updated part per TSB-12-GA-005.
The GA6D's primary reliability focus is long-term timing chain and CVVT system health, with elevated maintenance importance in high-mileage or infrequently serviced vehicles. Internal Kia data indicates these systems are robust with proper care, while owner feedback highlights the critical nature of oil quality. Extended service intervals or use of incorrect oil can lead to costly repairs.
Analysis derived from Kia technical bulletins (2010-2016) and aggregated owner-reported failure data (2011-2020). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about KIA GA6D.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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